Tethering costs
To all the people who say that you are allowed to tether with other phones on O2- have you actually read the terms of your contract?
With O2, unless you have paid for the Web Max bolt on which I believe is 30 quid a month then the terms of the Web bolt on states the following:
"Data Bolt On Terms
The Web Bolt On allows you unlimited use of Telefónica O2 UK Limited's Edge/GPRS/ 3G networks (as applicable to your handset), for personal internet use via your mobile phone. All usage must be for your private, personal and non-commercial purposes. You may not use your SIM Card:
in, or connected to, any other device including modems;
to allow the continuous streaming of any audio / video content, enable Voice over Internet (Voip), P2P or file sharing; or
in such a way that adversely impacts the service to other O2 customers.
If O2 reasonably suspects you are not acting in accordance with this policy O2 reserves the right to impose further charges, impose network protection controls which may reduce your speed of transmission, remove the Web Bolt On from your account or disconnect your tariff at any time, having attempted to contact you first."
Notice the bit about "in, or connected to, any other device including modems", that's yer tethering out the window.